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(No Model.)

0. SSERVOSS.

v HEATING FURNACE FOR STEAM BOILERS. No. 404,116. Patented May 28, 1889.

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UNITED STATES PATENT OFFICE.

COURTNEY S. SERVOSS, OF BROOKLYN, NEWV YORK, ASSIGNOR TO E. PAGE DAVIS, OF SAME PLACE, AND ASA L. ROGERS, OE NEWV YORK, N. Y.

HEATING-FURNACE FOR STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 404,116, dated May 28, 1889.

Application filed February 8, 1889. Serial No. 299,107. (No model.) I

To all whom it may concern.-

Be it known that I, COURTNEY S. SERVOSS, of Brooklyn, Kings county, New York, have invented a new and useful Improvement in Heating-Furnaces for Steam-Boilers, &c., of which the following is a specification.

My invention relates to a new furnace intended for heating purposes, in which the heat is produced by theignition of mingled jets of air and gas, or air and oil, within a suitable chamber, which is disposed in the usual position of a fire-box.

My invention consists more particularly in the construction and arrangement of the air and gas or oil tubes and in their position with reference to each other and to the combustion-chamber; also, in the disposition of a water-tube for delivering a supply pf water at the bottom of said combustion-chamber, and in the general construction of the apparatus, substantially as hereinafter set forth.

In the accompanying drawings, Figure 1 is a transverse sectional view on the line X X of Fig. 2. Fig. 2 is a longitudinal sectional view on the line Y Y of Fig. 1.

Similar letters of reference indicate like parts.

A represents a steam-boiler to be heated, which is supported in the usual way upon the walls B O D.

E is the fire-space, which is below the boiler and extends rearwardly to the uptake in the ordinary manner. Directly below the firespace and resting upon a pier, F, is an elongated trough or box, H, of fire-clay or other refractory material, in which is the combustion-chamber G, which is open at the top and communicates with the fire-space E. The edges of the trough II are beveled, and upon them rest a series of fire-clay bars, I, which extend at an inclination upward and rest upon the furnace-walls, as shown. Entering at opposite sides of the chamber G and disposed opposite one another are the air-blast tubes J and K, which communicate with any suitable source of air under pressure. Also entering said chamber G and disposed concentrically with tubes J K are smaller tubes, L M, which communicate with any suitable source of gas or oil supply.

Extending longitudinally along the bottom of chamber G is a pipe, N, perforated on its upper surface within said chamber and provided with a valve, 0. This pipe communicates with a water-supply.

The operation of the apparatus is as follows: A blast being turned on through the pipes J and K and oil or gas being admitted through the pipes L M, the mingled air and gas, or air and oil-spray, is ignited at the pipeorifices and an intense flame is caused within the chamber G, which rises upward out of said chamber and, receiving additional air through the spaces between the bars I, spreads upward and around the bottom of the boiler and rearward to the uptake. The orifices of the pipes J K and also of pipes L M are to be placed relatively opposite one another, and they are to be separated by such a distance as that the two air and gas blasts may meet, so that a great dispersion of the mingled molecules of air and gas is obtained, and hence a large and intense flame, which spreads out above the chamber G in the manner already stated.

The object of the pipe N is to supply a constant but small amount of water, the flow of which is regulated by the valve 0. This water is disassociated under the intense heat, so that when petroleum is used in connection with the air-blast its hydrogen will unite with the silica in the oil, and in this way the formation of slag, which often appears in the chamber of petroleum-furnaces, will be prevented.

The object of inclining the bars I is to give shape to the flame and to confine it in suitable proximity to the bottom of the boiler.

In lieu of making the trough H of fire-brick or fire-clay, I may make it of iron and line it with brick.

I claim- I 1. The combination of a trough or boX containing a chamber, air pipes entering said chamber on opposite sides thereof and in line with one another, oil-pipes entering said chamber through said air-pipes and having their delivery-orifices disposed relatively opposite one another, and a water-delivery pipe arranged in said chamber and below said air and oil pipes, substantially as described.

2. The combination of the boiler and its supporting-Walls, as B CD, a trough or box, H, arranged below said boiler, a series of bars, I, set at intervals apart and extending from said trough to said Walls, air-pipes entering through the sides of said trough and disposed in line and relatively opposite one another, oil-pipes entering said trough through said air-pipes and having their delivery-orifices opposite one another, and a perforated water- 10 delivery pipe in said trough below said airpipe and oil-pipe, substantially as described.

COURTNEY S. SERVOSS. Witnesses:

Asa L. .ROGERS, PARK BENJAMIN. 

